This is definitely a huge problem in many areas. I've known around a dozen people whose houses were robbed while they were at a funeral. Last funeral I went to, recently, the funeral director told the family members they needed to arrange for people to housesit during the services. They did and two of them were then faced with burglars trying to break in.
There are organized crime gangs that read obituaries and make it their business to take your stuff.
If you are flying out of state to bury your spouse or parent, the risk is greater. In two cases I know of, a moving truck arrived as soon as they left for the airport and took absolutely everything.
If a criminal can gather information about his target easily, simply and anonymously, it would be stupid for him (or her) not to do so.
AFAIK police departments everywhere have been advising people for at least five decades to be sure someone picks up your mail and newspapers if you're planning to be away, because criminals will realize that nobody lives in or checks up on a house if the mailbox is overflowing.
Haven't you ever seen the scene in the original "Home Alone" where the Wet Bandits are casing the neighborhood before they hit the houses?
A number of professional footballers in the UK had their houses broken into during matches they were playing in, in the last two or three years. In some cases repeatedly, after new items were purchased to replace those stolen, the house was broken into again, during another match.
I'd guess home matches are best, because their wife/gf/partner will be more likely to go to the stadium, rather than for an away match, when their wife may not travel.
The reasoning behind this was that criminals could use the phone number to figure out where the sellers lived, and go steal their guns.
Funny how these things differ between places.